Combined mixing and serving glass for drink mixers



COMBINED MIXING AND SERVING GLASS FOR DRINK MIXERS Filed Feb. 25. 1927 Patented Apr. 15, 1930 UNITED STATES JULIUS H. KARLSON, OF CHICAGO, ILLINOIS COMBINED MIXING- SERVING- GLASS FOB DRINK MIXERS Application led February 25, 195W.l Serial No. 170,762.

This invention relates to drink mixers of the kind in which a container of the ingredients tobe mixed is supported upon a machine in position to have its contents stirred by a motor driven agitator. In'apparatus of this kind, particularly where the placinlg1 k0i the cup closes an electric circuit and t erefore necessitates interengaging the cup with the machine to resist displacement of the cup, it is usual to employ a metal cup for the lcontainerand to have the switch which controls the circuit engaged directly by the cup in holding it in closed position, but cups of this kind, while best adapted to interlock with the `machine, are objectionable for numerous reasons. Because of the unsuitability of such a cup for use as a drinking vessel, its contents must be poured into a serving cup after the mixing operation is completed; being of metal the cup is liable to cause a short circuit between the switch and the elements which support the cup upon the machine; being opaque the cup does not expose to view the progress of the mixing opera- ,25 tion which could readily be judged if open to inspection; such cups are kept clean with diiiculty, their state of cleanliness or uncleanliness is not readily observable, and unscrupulous users of the apparatus, grow careless of sanitary precautions in using them; and, metal is not the best material from which to produce a cup that must slide freely into and out of interlocking assembly with the elements that hold it upon the machine.

The present invention overcomes all of the above enumerated objections and affords otheradvantages by providing a construction for the containers used in connection with drink mixers which enables the contain- 40 ers to be made of glass. That is to say, the invention introduces into the construction of glass containers, certain Jfeatures that adapt them for convenient assembly upon and interlocking with mixing machines which receive the open end of the container.

at the top and sup ort and interengage the container by a stu ded step at bottom, and while accomplishing these purposes, minimize the hazard of the cup slipping from the hand during mani ulation, or the cup short circuiting current rom the switch to the step, besides adapting the cup to more surely seat itself upon the step and behind the stud.

One problem vin the usepf glass as the material from which to produce a receptacle that. must be mounted upon a mixing machine of standard type, arises from the necessity of having the receptacle so designed that it will interlock with the support which the machine oiers; and another incident to such problem arises from the diiiculty of obtaining a rm grip against lateral and vertical sli pin in the manipulation of the rece taclle w en placing it upon and removing it rom the machine, and the achievement of this through means which does not add objectionably to the difficulty of keeping the receptacle clean. These problems are met, by the tpresent invention, one element of the pro lem being met, by producin the glass receptacle with a deep integral ange of relatively massive construction, to form a hollow bottom through which the receptacle islreceived u on the sup ort which the machine oiers an by which t e receptacle may be made to safely interlock with means preventing it from displacement from its support, the inner surface of this ange bein made up partly by a deecting incline whic when engaged with a retaining stud on the support, causes the receptacle to become rmly seated under its own weight; and the other element of the problem being met by constructing the external wall of the receptacle with a series o vertical ribs of angularsection providing deep vertically extending recesses, and a safe grip; the ribbing being of gradually decreasing depth from the upper limit of the zone of the receptacle wall y which it occupies to the lower limit thereof,

where the grooves disappear and merge with the normal surface of the receptacle; and said upper limit of the ribbing being further developed into a substantial shoulder by the provision of an annular oset overhanging the upper ends of the ribs, so that the grip of the glass receptacle, in its manipulation, 1s made very safe against lateral or vertical slipping, and the grooves incident thereto can readily be cleansed and wiped by reason of their downwardly decreasing depth and the ultimate merging with the smooth surface of the glass.

In the accompanying drawing, in which the preferred embodiment of the invention is shown by way of illustration- Figure 1 is an elevational view of a mixing machine of known construction having applied thereto a receptacle embodying the several features of the present invention, such receptacle being shown in vertical section.

Figure 2 shows in elevation and on an enlarged scale, a fragmentary portion of the exterior wall of the receptacle shown in Figure 1; and

Figure 3 is a section on the line 3"-3x of Figures 1 and 2.

A represents the standard, B the motor, C the upper receptacle-securing means, for instance, intruding fingers which not only sustain the cup against tipping but break up the vortex in stirring, and D the supporting step l of a known type of drink mixer. The present invention provides a novel construction of cup or container 1 for use on a machine of this general type, and it produces such receptacle from glass, with the above-stated ladvantages in the use of that material for the production of a container for alimentary substances, and with the particular advantage of adapting the container for use not only in the mixing of its contents, but for use in serving the mixture to a customer. In adapting a glass container 1 for use in the situation illustrated in Figure l` it is formed with a deep and massive bottom flange 2, preferably of greater thickness than the side wall of the container and developing a hollow bottom 3; and this bottom flange is fashioned with an inner beveled deflecting face 4 through which it is adapted to engage the interlocking stud E on the step D of the machine and cause the container to move to a firm interlock with the support D under the weight of the container. With such a construction of bottom, the container having been moved into engagement with the upper securing means C, will have its lower end swung inwardly until it is brought over the interlocking stud E and then released, when it will be caused by the deiwting bevel 4 to move to a firm seating on 'the support, thereby insuring safe interlock with the machine and the holding of the switch F in closed position.

The side wall of the container 1 is constructed to provide a gripping zone 5 developed from ribs 5, which, as shown more clearly in Figure 3, are of sharp angular form and extend vertically; the grooves between said ribs being relatively deep at their upper ends or at the upper margin of the gripping zone, where they merge with an annular overhang 6 (Figure 3) affording an eitective shoulder that resists vertical slipping of the container during manipulation; and these grooves between the ribs 5a decrease in depth downwardly until they eventually merge with the external surface of the container at the lower limit of gripping zone, with the result that without detracting from the eiiciency of the ribs as an antislipping means, the gripping zone is made easily cleansable and prevented from harboring impurities.

Shoulder 6 is preferably s0 located that it will serve as a gauge line in determining the quantity of fluid to be placed in the container, or, in other words, fixing the u per limit to rwhich the container may be fille without subjecting it to overiow under the vortical disturbance of the agitator.

Transparency of the container is advantageous not only for all the reasons which obtain in making a drinking receptacle of glass, but for the reason that it permits inspection of the contents during the mixing operation, and enables the operator to determine when the mixing has progressed to the desired stage. Being of glass, the container slips up around the upper securing means and rides over the lower interlocking stud on the step; and in the event of any leakage of current to the switch, it will not be grounded through the cup as in machines employing cups of metal.

I claim:

1. In combination, a drink mixer, and a container; said drink mixer comprising an 4 electrically actuated agitator, means for receiving and holding the upper portion of the container when assembled with the agitator, a step receiving the lower end of and supporting the container in such assembly with the agitator, a stud interlocking the container with the step, and a switch controlling the supply of current to the agitator, in position to be engaged by the container when so interlocked; and said container being constructed with a hollow bottom with an internally beveled defining wall through which it engages with said stud; said container and all of its structural features being made of glass.

2. In a drink mixing apparatus having an electrically driven motor, an agitator depending from said motor, means for sup orting a receptacle in position surrounding tlbe agitator and an electric circuit closer located to be displaced by the receptacle when on said support, `a receptacle adapted to surroundsaid agitator and interengage with said support and to displace the circuit closer while in such interen agement; said receptacle being made of mo ded vitreous materlal and constructed with a massive base flange resenting a vitreous surface through whic it interengages with the support.

Signed a-t Chicago, Illinois, this 22nd day of February, 1927.

JULIUS H. KARLSON. 

